Solved by: WarlordSam
This hardware challenge is pretty straight-forward. We are given a .sal file which has captured data.
We can use Logic Analyzer (https://www.saleae.com/downloads/) to view this .sal file. The flag is printed as banner made up of 5 Message fragments .
Solved by: warlordsam
Similar to Timed Transmission, the flag is directly visible to us when we open the .zip folder in GerbView Software (https://www.gerbview.com/download.html).
First part of the Flag is visible directly when all the layers of the PCB board are set to be visible.
Selecting and unselecting, layer by layer; we can get the rest part of the flag too.